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Leases - Aggregate minimum lease commitments (Details) - USD ($) $ in Thousands | Sep. 26, 2019 | Dec. 27, 2018
--- | --- | ---
Operating Leases |  |
2019 |  | $ 11,317
2020 |  | 10,169
2021 |  | 9,670
2022 |  | 9,910
2023 |  | 9,038
2024 and thereafter |  | 80,523
Total minimum lease payments |  | 130,627
Finance Leases |  |
2019 | $ 1,020 | 3,073
2020 | 3,584 | 2,978
2021 | 2,992 | 2,679
2022 | 2,946 | 2,718
2023 | 2,836 | 2,718
2024 and thereafter | 16,948 | 16,940
Total minimum lease payments | 30,326 | 31,106
Less: amount representing interest | (6,248) | (6,978)
Total present value of minimum capital lease payments | $ 24,078 | $ 24,128

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